Nut/OS  4.10.3
API Reference
devreg.c
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00001 /*
00002  * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  */
00033 
00034 /*
00035  * $Log$
00036  * Revision 1.7  2009/01/17 15:37:52  haraldkipp
00037  * Added some NUTASSERT macros to check function parameters.
00038  *
00039  * Revision 1.6  2009/01/17 11:26:52  haraldkipp
00040  * Getting rid of two remaining BSD types in favor of stdint.
00041  * Replaced 'u_int' by 'unsinged int' and 'uptr_t' by 'uintptr_t'.
00042  *
00043  * Revision 1.5  2008/08/11 07:00:33  haraldkipp
00044  * BSD types replaced by stdint types (feature request #1282721).
00045  *
00046  * Revision 1.4  2004/09/08 10:24:26  haraldkipp
00047  * RAMSTART is too platform dependant
00048  *
00049  * Revision 1.3  2004/03/18 13:42:50  haraldkipp
00050  * Deprecated header file removed
00051  *
00052  * Revision 1.2  2004/03/16 16:48:45  haraldkipp
00053  * Added Jan Dubiec's H8/300 port.
00054  *
00055  * Revision 1.1.1.1  2003/05/09 14:41:47  haraldkipp
00056  * Initial using 3.2.1
00057  *
00058  * Revision 1.3  2003/04/21 17:06:40  harald
00059  * Device init moved to registration
00060  *
00061  * Revision 1.2  2003/02/04 18:15:56  harald
00062  * Version 3 released
00063  *
00064  * Revision 1.1  2003/01/17 18:55:24  harald
00065  * Device routines splitted
00066  *
00067  */
00068 
00069 #include <string.h>
00070 #include <sys/nutdebug.h>
00071 #include <dev/uart.h>
00072 
00077 
00081 NUTDEVICE *nutDeviceList = 0;
00082 
00090 NUTDEVICE *NutDeviceLookup(CONST char *name)
00091 {
00092     NUTDEVICE *dev;
00093 
00094     NUTASSERT(name != NULL);
00095     for (dev = nutDeviceList; dev; dev = dev->dev_next)
00096         if (strcmp(dev->dev_name, name) == 0)
00097             break;
00098 
00099     return dev;
00100 }
00101 
00129 int NutRegisterDevice(NUTDEVICE * dev, uintptr_t base, uint8_t irq)
00130 {
00131     int rc = -1;
00132 
00133     NUTASSERT(dev != NULL);
00134 
00135     if (base)
00136         dev->dev_base = base;
00137     if (irq)
00138         dev->dev_irq = irq;
00139 
00140     if (NutDeviceLookup(dev->dev_name) == 0) {
00141         if(dev->dev_init == 0 || (*dev->dev_init)(dev) == 0) {
00142             dev->dev_next = nutDeviceList;
00143             nutDeviceList = dev;
00144             rc = 0;
00145         }
00146     }
00147     return rc;
00148 }
00149